bfs: replace inode uid,gid,mode initialization with helper function

	}

	set_bit(ino, info->si_imap);

	info->si_freei--;

	inode->i_uid = current_fsuid();

	inode->i_gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current_fsgid();

	inode_init_owner(inode, dir, mode);

	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;

	inode->i_blocks = 0;

	inode->i_op = &bfs_file_inops;

	inode->i_fop = &bfs_file_operations;

	inode->i_mapping->a_ops = &bfs_aops;

	inode->i_mode = mode;

	inode->i_ino = ino;

	BFS_I(inode)->i_dsk_ino = ino;

	BFS_I(inode)->i_sblock = 0;